Subject:
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RE: Linx technologies RF modem
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Sat, 20 Feb 1999 08:34:57 GMT
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Original-From:
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(doug@knowpeace)AntiSpam(.com)
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Viewed:
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854 times
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Dave,
I'm looking seriously at the Linx HP eval kit. Please let me
know how yours works out, and any tips on installation to the
handy board would be greatly appreciated. Also, what if I
wanted to put HP RX/TX on two robots plus host computer, I
wonder how this might work? The HPs have eight binary
selectable channels, but switching sounds like a hassle.
Presumably some protocol could be written so they could all
talk on the same channel, a multidrop system where each
node has a unique ID and they only transmit one at a time.
The protocol could queue requests and prevent collisions.
Anybody have such a beastie? BTW I find it odd that Linx
doesn't sell integrated transceivers, just separate TX and
RX modules. You'd think many applications would want both.
Doug
PS. I have a patriot scientific PSC1000 eval board here,
it's a 100Mhz RISC CPU for <$10 in volume that has
low power consumption, can address 4GB of memory and
can run Java natively, also C and FORTH. I think the
PSC1000 would make an excellent robotic platform.
Check out the data sheet of this kit:
http://www.ptsc.com/downloads/psc1000/evalcard/Docs/evaldes.html
Another eval kit is on the way soon that is an NC
(network computer) test platform, it with have
ethernet onboard, VGA outputs, all of the standard
things you'd need for an NC. This will make the
networking code a lot simpler and more powerful,
plus pass-by-value objects eventually. Things that
make you go hmmmm ... especially considering this:
http://www.dalsemi.com/News_Center/Press_Releases/1999/prjini.html
Using these on module actuators/sensors would allow
them to join the onboard network automatically and
federate to remote hosts. The PSC1000 could be the
main controller. I hope to prototype this. But I'm
not really a hardware guy ... definitely need some
help on circuit design.
Dave wrote:
> I managed to speak with one of Linx's applications engineers- He said that a
> couple of the guys over there are using the Linx modules to communicate with
> HC11's, so interfacing the kit with the handyboard shouldn't be much of a
> problem. He said I can have my faulty receiver module replaced free of • charge.
> The new HP series modules, by the way, are the same price as the old ones.
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Message has 1 Reply:
 | | Re: Linx technologies RF modem
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| doug@knowpeace.com wrote: <snip> (...) I did some reading about the new PSC1000 CPU, and it seems like the ideal next step in the evolution of hobby/research robot controllers. I especially like the support for Java and networks. Not being a (...) (26 years ago, 20-Feb-99, to lugnet.robotics.handyboard)
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Message is in Reply To:
| | RE: Linx technologies RF modem
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| I managed to speak with one of Linx's applications engineers- He said that a couple of the guys over there are using the Linx modules to communicate with HC11's, so interfacing the kit with the handyboard shouldn't be much of a problem. He said I (...) (26 years ago, 19-Feb-99, to lugnet.robotics.handyboard)
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